m77The Zastava M77 B1 is a battle rifle developed and manufactured by Zastava Arms in Serbia (formerly Yugoslavia). [3] It was introduced in 1977. [4] It is a derivative of the Zastava M70The M77 motorway is a major westbound link in the west of Scotland, connecting the cities of Glasgow and Prestwick. It runs for 47 miles and is the main route for traffic travelling between